• Question: is time travel possible

    Asked by 328bera39 to Colin, Kevin, John, Shikha, Triona on 10 Nov 2014. This question was also asked by 456bera39, killa, Giller_98, Wallis_hehe, aileenjcat.
    • Photo: Kevin Motherway

      Kevin Motherway answered on 10 Nov 2014:

      Yes. But only one way. You can travel into the future by travelling faster than the Earth. If you go faster and faster and approach light speed, time as you experience it slows down, but for the people back on Earth it continues at their rate so when you come back from your near light speed journey you may have experienced 10 years while the people on Earth have experienced 1,000. So you’ve travelled forward 990 years in time. Astronauts returning to Earth from the ISS after spending 6 months travelling at 22,000 km/hr will have travelled 0.007 of a second into the future. Even if you don’t get to light speed everytime you take a plane journey or travel at high speed you are travelling forward in time by a minuscule amount as time slows down for you ever so slightly compared to those on the ground. Experiments with atomic clocks flown on planes have confirmed this. But you cannot go back in time, its a one-way trip. It only works travelling forward in time as its about time going forward but a different speeds, but always forward; never backwards.

    • Photo: Shikha Sharma

      Shikha Sharma answered on 11 Nov 2014:

      Hi 328bera39, 456bera39, killa, Giller_98, 622bera34,
      It’s my wildest fantasies since I was in school. You know we all travel in time. During the last year, I’ve moved forward one year and so have you. Time dilation is a phenomenon that could allow us to travel into the future. Time dilation you can correlate with that time passes more slowly for a moving clock than it does for a stationary clock. Time passes more slowly the closer you approach the speed of light. So, if we can develop a device which can move at a speed closer to light we can probably travel in future.
      I read this example somewhere it will be fun to travel in future and then coming back home 🙂
      For example lets us say you are 13 years old when you left Earth in your spacecraft which is travelling at almost similar of the speed of light. You have celebrated your birthday only 5 times during your journey. When you will return home you are 18 years. Do you know what will be the age of your classmates?? They will be 63 years old. This is because time passed more slowly for you as you were moving with a speed similar to that of light, you will have experienced only five years of life, while your classmates will have experienced a full 50 years as they were on Earth.

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